The more you cut it, the shorter it will get

Hey Jim,

Now, you know I am not a gunsmith, so this might not be doable at all. What about your transparencies having the threads on them as well, or an overlay of them for Remington, Mauser etc. So you take 223 and 223AI with Mauser threads and overlay them, then rather than convert the distance count the threads and make your cut? Not precise enough? Just a thought early in the morning over a breakfast of Rice Chex and OJ.

Red

While on a mountain top south of Jackson Hole last week and should have been concentrating on big mule deer. Anyway, I have a job in the shop that needs rework. It is presently a 223 AI that the client wants converted back to a standard .223. Everyone knows it takes some figgering to find how much to set it back without just removing all of the chamber section.

Here is my idea. Is it possible to find a set of transparencies that we could overlap to determine this? They could be double sizew or triple size to make the measuring easier and then we could convert this to actual size.

Maybe someone already makes these. I don't know.

Jim

Make yourself a comparator, similar to those for bullets.

Just bore a hole in a piece of stock to a diameter equal to the body/neck junction of the improved case. Insert the original case. Measure distance from where comparator touches case to the body/neck of this original case.

I suspect your looking at bobbing off threads and starting from scratch.